I have landed on this
Sparta-Flex® Pigmented to protect the concrete. When compared to epoxy and urethane coating this appears to have better adhesion, abrasion resistance and thermal break down.
I had to put up photos of the OH doors, very nice with automatic pin locks on the tracks and quiet. The doors operate very smooth, the motors are progressive engaging the drive slowly upon the initial opening and again when closing completely. This progressive engagement happens for approx. the first and last 6" of operation. No daylight around the edges when closed.